The Nordic Heavy lift vessel 'Borealis' is a solid and innovative solution for the new heavy lift market requirements. Based on state of the art technology the vessel combines quick mobilisation ability, large deck space, good motion behaviour, excellent DP capability and is flexible to accommodate any additional equipment on board for additional services which makes the unit a versatile tool for the deepwater installation market. Both big surface and subsea lifts can be accommodated cost effectively. The timing of the vessel appearance in the market place is excellent. The new vessel fills the gap which exists between the large semi submersible crane vessels which are used to install platforms and topsides in nowadays both shallow and deep waters and the older monohull vessels which were built in the seventies and eighties. This paper deals with both the design of the entire vessel as the crane specific design process.
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